RU2565383C1 - Multifuel diesel regulation system - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: multifuel diesel regulation system contains the centrifugal sensor (1) with the sliding coupling (2), the main lever (3) installed with a possibility of interaction with the sliding coupling (2), the control lever (9) connected through the spring (8) with the main lever (3) and the fuel metering element. The main lever (3) is linked with the metering element through two pinion racks (4) and (5) driven by the gear wheels (6) and (7) installed on additional shafts. The gearing ratio of gear wheels (6) and (7) is equal to the ratio of heats of combustion of the main and alternative fuels.

EFFECT: improvement of accuracy of regulation of the diesel engine fed by alternative types of fuel.

1 dwg

Description

The invention relates to systems for regulating the fuel supply of diesel engines equipped with in-line high-pressure fuel pumps (TNVD) with a mechanical regulator, and can be used in mechanical engineering, mainly engine building. The use of various types of fuel in a diesel engine presents difficulties associated with a change in engine power indicators when switching from diesel fuel to alternative fuel. The reason for the reduction in power is the heat of combustion different from diesel fuel (usually lower), viscosity and density, which leads to a decrease in engine power.

Known diesel control systems comprising a centrifugal sensor with a movable clutch, a main lever mounted to interact with a movable clutch, a control lever connected through a spring to the main lever, a fuel metering unit [1].

The disadvantage of these systems is the impossibility of preserving the manufacturer’s law of supplying heat to the diesel cylinders at all its high-speed and load conditions when operating on new fuels and fuels with a calorific value other than diesel fuel and, consequently, a deterioration in power, economic and durability indicators diesel engine.

The closest in technical essence and the achieved result to the proposed one is a multi-fuel diesel control system comprising a centrifugal sensor with a movable clutch, a main lever mounted to interact with the movable clutch, a control lever connected via a spring to the main lever, a fuel metering unit connected to the main lever through the fork lever and intermediate rods [2].

The disadvantage of this system is the complexity of manufacture and low accuracy of regulation of the composition of the fuel when working on mixed fuels and, therefore, the deterioration of power, economic and durability indicators of the diesel engine.

A significant difference between the proposed control system and all previously known solutions is that the main lever is connected to the metering unit through two gear racks driven by gears mounted on additional shafts, the gear ratio being equal to the ratio of the heat of combustion of the main and alternative fuels .

The aim of the invention is to simplify the manufacture of the structure and increase the accuracy of regulation of the composition of the fuel of a diesel engine, tractor means operating on alternative fuels.

The advantages of the proposed regulatory system are determined by the following circumstances.

In the proposed system, the kinematic connection of the main lever is made in the form of two gear racks driven relative to each other by a gear pair. The design is distinguished by its simplicity and accuracy of regulation. The gear ratio of gears is equal to the ratio of the heat of the primary and secondary fuels, which allows you to maintain the factory-established law of heat supply to the cylinders.

In FIG. 1 shows a diagram of a proposed multi-fuel diesel control system.

The control system contains a centrifugal sensor 1 with a movable clutch 2 acting on the main lever 3, two gear racks 4 and 5, driven by gears 6 and 7, a spring 8, a control lever 9.

The system operates as follows.

The centrifugal sensor 1, depending on the speed of operation of the diesel engine and the position of the spring 8 and the control lever 9 through the movable clutch 2, informs the free end of the main lever 3 the established law of motion, which is transmitted through the gear rack 4 to the larger diameter gear 6, which rotates clockwise on an additional shaft. In this case, the gear of smaller diameter 7 rotates counterclockwise also on the additional shaft, reporting the law of motion of the gear rack 5 connected to the metering body in the same direction. The amount of movement of the fuel metering body changes in proportion to the ratio of the radii of the gears of smaller diameter 7 and larger diameter 6, therefore, the amount of main and alternative fuel supplied to the diesel cylinders will be proportionally changed.

The feasibility study of the present invention consists in the possibility of obtaining additional power from the diesel engine, improving economy and increasing durability by simplifying the manufacture of the structure, increasing the precise and operational control of the amount of mixed fuel at all its load and speed modes.

Literature

1. Belyavtsev A.V., Protserov A.S. Fuel equipment of automotive diesel engines. M .: Rosagropromizdat, 1988 .-- 224 S., ill.

2. RF patent No. 2044908. Multi-fuel diesel regulation system. // Bolotov A.K., Plotnikov S.A. - 4 S., 4 ill.

Claims (1)

A multi-fuel diesel control system comprising a centrifugal sensor with a movable sleeve, a main lever mounted to interact with the movable sleeve, a control lever connected through a spring to the main lever, a fuel metering unit, characterized in that the main lever is connected to the metering unit through two gear racks driven by gears mounted on additional shafts, the gear ratio being equal to the ratio of the calorific value of the main and alternative tive fuels.